Kerr Bay Campsite sits on the shores of Lake Rotoiti within Nelson Lakes National Park, just off SH63 on Kerr Bay Road and roughly 500 metres from the St Arnaud village.

Surrounded by beech forest, the campground offers views across the lake toward the mountains and is situated near a boat launching ramp.

For a DOC campsite, the facilities are notably well-appointed, including hot showers, flushing toilets, a cooking shelter, campervan waste disposal, and powered sites.

The campground is open year-round, though advance bookings are strongly recommended during summer and peak periods such as Easter and powerboat regatta weekends.

Note that the site is not suitable for vehicles longer than 7 metres, and campers must pack out all rubbish and recycling as the campground does not accept waste disposal.